TB 007 - Fighting Fires with Large Spray Streams

Question 1

Water expands into steam at a ratio of __ to ____.

Answer 1

1 to 1700

Question 2

1 gallon of water capable of producing about ____ cubic feet of vapor.

Answer 2

227 cubic feet

Question 3

1 gallon of water absorbs ____ BTU in changing to steam

Answer 3

9330 BTU

Question 4

Only ____ of these 9330 BTU’s are utilized in raising the water temperature from 62° to 212° F.

Answer 4

1250

Question 5

_____ _____ can be used more advantageously in shielding personnel from radiant heat

Answer 5

Spray streams

Question 6

There is considerably less reach with a spray stream nozzle due to “_______” which applies to the friction between air and water as the water travels toward the fire.

Answer 6

skin friction